
Age: 74
male
Mark Richard Hamill (born September 25, 1951) is an American actor. He is best known for starring as Luke Skywalker in the Star Wars franchise and the Joker in various animated DC Comics projects, starting with Batman: The Animated Series in 1992. Through the 1980s, Hamill distinguished himself from his Star Wars role by pursuing a Broadway theatre career, starring in productions of The Elephant Man, Amadeus and The Nerd. His other live-action film and television roles include Kenneth W. Dantley Jr. in Corvette Summer (1978), Private Griff in The Big Red One (1980), Crow in Sushi Girl (2012), Ted Mitchum in Brigsby Bear (2017), and Arthur Pym in the Netflix miniseries The Fall of the House of Usher (2023). Hamill has also had a prolific career as a voice actor. Aside from Joker, his roles include the Hobgoblin in Spider-Man: The Animated Series (1995–1998), Fire Lord Ozai in Avatar: The Last Airbender (2005–2008), Mr. Salacia and Senator Stampingston in Metalocalypse (2006–2013, 2023), and Skips in Regular Show (2010–2017).

The Valorians were a species of peaceful humanoids that lived on the planet Valoria until they were invaded by the predatory Rulons. A group of Valorians lead by Questar attempted to escape the Rulon invasion using a spaceship equipped with their "Space Time Energy Projector" (S.T.E.P.); however, something went wrong. They were sent back in time and space, to the planet Earth 65 million years back to the age of the dinosaurs. Unknown to them, the Rulon flagship, the Dreadlock, locked in with a tractor beam, was also sent back through time when the S.T.E.P. was activated. After successfully landing on prehistoric Earth, the Valorians used their AMP ("Amplified Mental Projector") necklaces to telepathically communicate with the dinosaurs they encountered and eventually befriended them. On the other hand, the Rulons - led by the warlord Krulos - used brainwashing devices known as brain-boxes to control dinosaurs for their own needs. The Rulons then launched an attack on the Valorians, who called upon their dinosaur friends to assist them in fighting back. After ultimately defeating the Rulons, the Valorians renamed themselves Dino-Riders.

